The paper describes standard methods of diagnosing of the AMV (the Rosomak) drive unit technical condition
used in daily operation in military missions in Afghanistan. Main rule of the method of diagnosing of the vehicle
technical condition is using an external diagnosing system. This system is connected to the vehicle at the time of
checking of operation of the powertrain control system configuration of the drive unit to permit the diagnosis,
including examination of the engine and gearbox. Enhanced diagnostic system is connected to the OBD system with
using standard PC computer with appropriate software. Stored examples of the results of the operation of such system
are included in the paper. Measuring was led on a dynamometer stand to perform research of a propulsion unit in
work condition. Measurements of the engine parameters were led in steady state and transient engine operating
conditions. Unsteady-state condition studies were carried out using the method of free-range acceleration of the
engine. Pointed out the merits of the development of this type of study due to the perceived potential and usefulness of
the results obtained. The results of studies carried out by various methods and assess the current condition of the
engine and the entire powertrain were compared.
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